sischool.dk DNS records

🖥️ Nameservers2 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
bella.ns.cloudflare.com	108.162.192.74 172.64.32.74 173.245.58.74 2606:4700:50::adf5:3a4a 2803:f800:50::6ca2:c04a 2a06:98c1:50::ac40:204a	bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mark.ns.cloudflare.com	108.162.193.130 172.64.33.130 173.245.59.130 2606:4700:58::adf5:3b82 2803:f800:50::6ca2:c182 2a06:98c1:50::ac40:2182	mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.4.105	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.131.252	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 46ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	sischool-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca09::5 2a01:111:f403:ca09::7 2a01:111:f403:ca09::d 52.101.68.21 52.101.73.22 52.101.73.4 52.101.73.8	mail-db6pr03cu00105.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am0pr83cu00404.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)2 records 46ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:469	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:83fc	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 66ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.4.105,172.67.131.252 ech=AEX+DQBBHgAgACC0UQ5Sm51PtYMjpSLDJ1Bx3uQnlHOihm5V08ZXOEQsHAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:469,2606:4700:3035::ac43:83fc

🔌 SRV Records1 records 84ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records6 records 218ms

TXT Record
/cV6bvF8GaGBFcimvt59mbrF3ybF6TRj8YA85I+kEeA=
cisco-ci-domain-verification=6a9fcc392afd82be6778242246366368cdf4c2d5d7f7fd7aa5fac5c9d1107c42
K+FILDvfV1WjW7VwdQKwiLWde1imO8sIDgFu/zFo27+G0t8G1rZ3l6vhpoyFA1lqz+IyTbEG2gUD9gChDlq/Xw==
MS=ms76582345
uvmid=280202
v=spf1 ip4:46.32.40.41 ip4:94.138.76.52 ip4:94.138.76.44 ip4:89.184.150.166 ip4:94.138.77.92 ip4:94.138.76.180 ip4:212.37.142.20 ip4:212.37.142.28 ip4:89.221.167.132 ip4:185.16.17.219 ip4:185.16.17.220 ip4:195.231.242.115 ip4:40.118.61.36 a:massmail.scannet.dk include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (sischool.dk)
-all (hard fail)	v=spf1 ip4:46.32.40.41 ip4:94.138.76.52 ip4:94.138.76.44 ip4:89.184.150.166 ip4:94.138.77.92 ip4:94.138.76.180 ip4:212.37.142.20 ip4:212.37.142.28 ip4:89.221.167.132 ip4:185.16.17.219 ip4:185.16.17.220 ip4:195.231.242.115 ip4:40.118.61.36 a:massmail.scannet.dk include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.sischool.dk)
p=none (monitor only)	v=DMARC1;p=none;sp=reject;pct=100;rua=mailto:DMARC@sischool.dk;ruf=mailto:DMARC@sischool.dk;ri=86400;aspf=r;adkim=r;fo=1

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC78ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2412008089
Primary NS (MNAME)	bella.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

35ms

A

48ms

MX

46ms

AAAA

46ms

TXT

218ms

CAA

44ms

HTTPS

66ms

TLSA

327ms

SOA

0ms

MTA-STS

77ms

DNSSEC

78ms

SRV

84ms

Total

1622ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-12 10:13:17	1622ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-05 21:57:40	3311ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-20 05:43:31	9372ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-19 00:10:21	1405ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-26 17:40:16	1049ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-25 13:59:54	1144ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-20 17:04:15	1955ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-18 02:11:34	1230ms	2 NS 2 A 1 MX	🔒 Secure	View